EFM32WG840F128 Energy Micro, EFM32WG840F128 Datasheet - Page 58

• Manufacturer Part Number: EFM32WG840F128
• Description: ARM Microcontrollers - MCU 128kb flash 32kb RAM
• Manufacturer: Energy Micro

Specifications of EFM32WG840F128

• Rohs: yes
• Core: ARM Cortex M4F
• Processor Series: EFM32WG840
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 48 MHz
• Program Memory Size: 128 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.85 V to 3.8 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFN-64
• Mounting Style: SMD/SMT

5.2 Soldering Information
2012-09-11 - EFM32WG840FXX - d0195_Rev1.00
Figure 5.3. QFN64 PCB Stencil Design
Table 5.3. QFN64 PCB Stencil Design Dimensions (Dimensions in mm)
1. The drawings are not to scale.
2. All dimensions are in millimeters.
3. All drawings are subject to change without notice.
4. The PCB Land Pattern drawing is in compliance with IPC-7351B.
5. Stencil thickness 0.125 mm.
The latest IPC/JEDEC J-STD-020 recommendations for Pb-Free reflow soldering should be followed.
The packages have a Moisture Sensitivity Level rating of 3, please see the latest IPC/JEDEC J-STD-033
standard for MSL description and level 3 bake conditions.
Symbol
a
b
c
d
b
c
Preliminary
Dim. (mm)
a
0.75
0.22
0.50
8.90
x
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d
z
y
Symbol
e
x
y
z
www.energymicro.com
e
Dim. (mm)
8.90
2.70
2.70
0.80